+---------+      +------+
|         |      |      |
|    H    B------D      G
|         | +---/| AS 2 |\  +------+
|         |/     +------+ \ |      |---L/8
A   AS1   C---+            \|      |
|         |\\  \  +------+ /| AS 4 |---M/8
|         | \\  +-E      |/ +------+
|    X    |  \\   |      K
|         |   +===F AS 3 |
+---------+       +------+